APA (7th ed.) Zitazioa
Callahan, J. F., Clark, L. H., & Kellough, R. D. (2002). Teaching in the middle and secondary schools (7th ed.). Merrill.
Chicago Style (17th ed.) Zitazioa
Callahan, Joseph F., Leonard H. Clark, eta Richard D. Kellough. Teaching in the Middle and Secondary Schools. 7th ed. Upper Saddle River, N.J.: Merrill, 2002.
MLA (9th ed.) Zitazioa
Callahan, Joseph F., et al. Teaching in the Middle and Secondary Schools. 7th ed. Merrill, 2002.
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